Third-party tools, even ones that use FFmpeg tools or libraries, are not supported here. Please refrain from submitting bug reports for "LAV Splitter Source" here at the FFmpeg bug tracker unless you can duplicate the issue using ffmpeg directly. Can you duplicate whatever issue you're experiencing by using ffmpeg? If you can then include the full command and the complete console output.

Also, tickets should not be marked as "important" unless the bug is a regression and/or makes FFmpeg unusable for a significant number of users.